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Proceedings Paper

Embedded and surface-mounted fiber optic sensors for civil structural monitoring
Author(s): Daniele Inaudi; Nicoletta Casanova; Pascal Kronenberg; Silvio Marazzi; Samuel Vurpillot
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Paper Abstract

Civil structural monitoring by optical fiber sensors, require the development of reliable sensors that can be embedded or surface mounted in concrete, mortars, steel, timber and other construction materials as well as in rocks, soils and road pavements. These sensors should be rapid and simple to install in order to avoid any interference with the building site schedule and not to require specialized operators to accomplish the task. The sensors have to be rugged enough to withstand the harsh conditions typically found in civil engineering including, dust, moisture, shocks, EM disturbances and unskilled workman. It is also desirable that the instrumentation survives for tens of years in order to allow a constant monitoring of the structure aging. This contribution presents the results of a four-year effort to develop, test and industrially produce a palette of sensors responding to the above requirements and adapted to different applications and host materials. These sensors include a small version (length up to 2 m) adapted for embedding in mortars, grout and glues, an intermediate version of length between 20 cm and 6 m adapted to direct concrete embedding or surface installation and a long version adapted to measure large deformations (up to 2%) over length up to 30 m and especially adapted for geostructures monitoring.

Paper Details

Date Published: 23 May 1997
PDF: 8 pages
Proc. SPIE 3044, Smart Structures and Materials 1997: Industrial and Commercial Applications of Smart Structures Technologies, (23 May 1997); doi: 10.1117/12.274668
Show Author Affiliations
Daniele Inaudi, Swiss Federal Institute of Technology and SMARTEC SA (Switzerland)
Nicoletta Casanova, Swiss Federal Institute of Technology, SMARTEC SA, and IMM SA (Switzerland)
Pascal Kronenberg, Swiss Federal Institute of Technology (Switzerland)
Silvio Marazzi, Diamond SA (Switzerland)
Samuel Vurpillot, Swiss Federal Institute of Technology (Switzerland)

Published in SPIE Proceedings Vol. 3044:
Smart Structures and Materials 1997: Industrial and Commercial Applications of Smart Structures Technologies
Janet M. Sater, Editor(s)

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